Function estimators is a generic function used to present point and
mean squared error (MSE) estimates and calculated coefficients of variation
(CV).
estimators(object, ...)an object for which point and/or MSE estimates and/or calculated CV's are desired.
arguments to be passed to or from other methods, e.g. indicator.
The return of estimators depends on the class of its argument. The
documentation of particular methods gives detailed information about the
return of that method.